diff options
| author | Huacai Chen <chenhc@lemote.com> | 2014-11-04 09:13:26 +0300 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 09:45:01 +0300 |
| commit | ec0f8d3fbb7ea12cfd10083e340381b96e7c34f8 (patch) | |
| tree | 9550596fd52cccb8b7026c7135553255ddb0313d /arch/mips/loongson/common/env.c | |
| parent | f490682a6b21ffed5acd7a0d49d8371e5e625d7a (diff) | |
| download | linux-ec0f8d3fbb7ea12cfd10083e340381b96e7c34f8.tar.xz | |
MIPS: Loongson: Allow booting from any core
By offering Logical->Physical core id mapping, so as to reserve some
physical cores via mask. This allow booting from any core when core-0
has problems. Since the maximun cores supported by Loongson-3 is 16,
32-bit cpu_startup_core_id can be split to 16-bit cpu_startup_core_id
and 16-bit reserved_cores_mask for compatibility.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/8323/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson/common/env.c')
| -rw-r--r-- | arch/mips/loongson/common/env.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/loongson/common/env.c b/arch/mips/loongson/common/env.c index f15228550a22..d8be5398105c 100644 --- a/arch/mips/loongson/common/env.c +++ b/arch/mips/loongson/common/env.c @@ -119,6 +119,8 @@ void __init prom_init_env(void) } loongson_sysconf.nr_cpus = ecpu->nr_cpus; + loongson_sysconf.boot_cpu_id = ecpu->cpu_startup_core_id; + loongson_sysconf.reserved_cpus_mask = ecpu->reserved_cores_mask; if (ecpu->nr_cpus > NR_CPUS || ecpu->nr_cpus == 0) loongson_sysconf.nr_cpus = NR_CPUS; loongson_sysconf.nr_nodes = (loongson_sysconf.nr_cpus + |